You have to remove hte 1/4" seam allowance on all sides, then double, then add it back. For example, a 4-patch made of 4 3" squares (3.5" cut) to make a 6" block would be made from 4 6.5" blocks, not 7" blocks, to make a 12" finished square.
If you post the block, I'm sure someone on here can help you out, if you aren't comfortable redrafting it yourself.

I agree, use EA or ask a friend who has it to help you.
Yes you can resize the block. You need to subtract the seam allowances. Also the resizing works on the squares and rectangles. I haven't figured out the curves or diagonals yet.

[QUOTE=cpfrog;6566704]I came across a cute 6" square block (finished) pattern but most of my projects are for a finished 12" square. I consider myself an experienced beginner... still learning!!! HAhaha

You could always make 4 of the 6" finished block and put them together to make a 12" finished block